138 BULLETIN 112, UNITED STATES NATIONAL MUSEUM. 



Suborder NUCLEOBRANCHIATA. 



Family PTEROTRACHEIDAE. 

 Genus CARDIAPODA Orbigny, 1836. 



CARDIAPODA PLACENTA Lesson, 1830. 



Voy. de la Coquille, Moll., p. 253, No. 3, pi. 3, fig. 2. 

 North Pacific. Pelade. 



Family CARINARIIDAE. 



Genus CARINARIA Lamarck, 1801. 



CARINARIA PUNCTATA Orbigny, 1836. 



Voy.- Anier. Mer., vol. 5, p. 160, pi. 11, figs. 6-15. 

 North and South Pacific. Pelagic. 



CARINARIA LATIDENS Dall, 1919. 



Proc. U. S. Nat. Mus., vol. 56, p. 342. 



North Pacific in north latitude 43° 10' and west longitude 147°. Pelagic. 



Family ATLANTIDAE. 

 Genus ATLANTA Lesueur, 1817. 



ATLANTA PERONII Lesueur, 1817. 



Journ. de Phys., vol. 85, p. 390, pi. 2, figs. 1, 2. 



North Pacific in north latitude 33° and west longitude 133°. Pelagic. 



ATLANTA INVOLUTA Gray, 1850. 



Gray, Figs. Moll. Anim., vol. 4, p. 101; Voy. Bonite, Atlas, pi. 21, figs. 



9-14 (1841 *). 

 Pacific Ocean. Pelagic. 



ATLANTA INCLINATA Gray, 1850. 



Gray, Figs. Moll. Anim., vol. 4, p. 101 ; Voy. Bonite, Atlas, pi. 19, figs. 8-21. 

 Pacific Ocean. Pelagic. 



ATLANTA HELICINOIDEA Gray, 1850. 



Gray, Figs. Moll. Anim., vol. 4, p. 101; Voy. Bonite, Atlas, pi. 20, figs. 23-30. 

 Pacific Ocean. Pelagic. 



ATLANTA BRUNNEA Gray, 1850. 



Figs. Moll. Anim., vol. 4, p. 101, pi. 242, fig. 5; Voy. Bonite, Atlas, pi. 21, figs. 



15-29. 

 Pacific Ocean. Pelagic. 



ATLANTA GAUDICHAUDII Gray, 1850. 



Figs. Moll. Anim., vol. 4, p. 101, pi. 241, fig. 4; Voy. Bonite, Atlas, pi. 20, figs. 



29-34. 

 Pacific Ocean. Pelagic. 



1 The names In the Atlas of the Voyage of the Bonite were in the vernacular only, 

 and were first latinized by Gray, before the appearance of the text of the Bonite. 



